Browsing by Author "Sami O. H. EL KHIDIR"

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    The Electrical Resistivity Model for Groundwater Exploration, Atmour Desert, Northern Sudan
    (Taraksh Journal of Cultural Studies, 2014) Sami O. H. EL KHIDIR; Kheiralla K. M; Abdalla E. M. ELSHEIKH
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    The Electrical Resistivity Model for Groundwater Exploration, Atmour Desert, Northern Sudan
    (Taraksh, 2014) Kheiralla K. M, Abdalla E. M. ELSHEIKH; Sami O. H. EL KHIDIR
    The study area lies in the Atmour Desert in the Northern State, Sudan, at about 50Km west of Karima city.The sedimentary Nubian Sandstone Formations are the main lithological unit crop out in the study area. These sedimentary rocks are a part of the sedimentary Nubian Saharan Basins (NSB) that represents an important groundwater aquifer in northern Sudan and the adjacent country. This study aims to investigate the potentialities of the groundwater for agricultural purposes. The investigations based on the remote sensing / GIS techniques, electrical geophysical survey in addition to the hydrogeological investigations. Remote sensing studies utilized the optical satellite imageries of Landsat 7ETM+ in addition to the Radar Interferometery SRTM for the elevation data. The main aimsare to reveal the geological, topographical aspects of the area, as well as to decipher the main lineaments and paleo-drainage pattern. Geophysical geo-electrical survey applied in this study using Vertical Electrical Sounding (VES) with Schlumberger array. A number of 100 VES's were carried along ten profiles lines perpendicular to the main fractures system in NW-SE direction. The acquired resistivity data were manipulated to construct the 2D & 3D lithological model. The satellite imageries disclosed two main fracture trends dominated by the NE-SW and NW-SE directions. A NW-SE trending phenomena indicates a depression that may mastering a configuration of a paleao-lake. The geophysical survey evident that there are two water bearing formations; the upper one lies at depth 80 to 130m below surface, while the lower one lies below the depth of 250 m from earth surface. From the hydrogeological investigations, Wells depths are dominantly range from 100 to 130m deep from surface. The measured water tables in the values range from 16 to 40 m from the surface. The water flow map revealed that the water levelsrange from 235m to 228m above mean sea level (a.m.s.l.), with a hydraulic gradient of 0.00014.